Question

Va rog mult, e urgent, dau coroana!!!

Answer 1

Răspuns:

1) MCaCO3=40+12+3×16=40+12+48=100g/mol

2) MAlCl3=27+3x35,5=133,5g/mol

3) MPbO2=207+2×16=239g/mol

4) MMg(NO3)2=24+14×2+6×16=24+28+97=148g/mol

5) MBaSO4=147+23+4×16=234g/mol

6) MZn(OH)2=65+2×1+2x16=99g/mol

7) MH2SiO3=1×2+28+3×16=2+28+48=78g/mol

8) MK2Cr2O7=2×39+2×52×16×7=294g/mol

9) MFe2(SO4)3=2x56+3×32+12×16=400g/mol

10) MCuBr2=64+2x80=224g/mol

Explicație: